Carradice Bagman Quick Release support for saddlebag.
This is the Expedition: Suitable for Cadet, Nelson, Nelson Longflap, Camper Longflap and Super C saddlebags Clearance required from rear wheel to saddle wires is 21cm.
Good condition although I notice one of the plastic covers on the release lever is missing.
Complete with the conversion piece for attaching to saddlebag.

£25 posted.